LibC: Implement wctrans

fleximus · Sep 17, 2021 · ff0ab8b · ff0ab8b
1 parent 7b17230
commit ff0ab8b
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Showing 2 changed files with 25 additions and 3 deletions.
diff --git a/Tests/LibC/TestWctype.cpp b/Tests/LibC/TestWctype.cpp
@@ -28,3 +28,14 @@ TEST_CASE(wctype)
  EXPECT(wctype("") == 0);
  EXPECT(wctype("abc") == 0);
 }
+
+TEST_CASE(wctrans)
+{
+ // Test that existing character mappings return non-zero wctrans values.
+ EXPECT(wctrans("tolower") != 0);
+ EXPECT(wctrans("toupper") != 0);
+
+ // Test that invalid character mappings return the "invalid" wctrans value (0).
+ EXPECT(wctrans("") == 0);
+ EXPECT(wctrans("abc") == 0);
+}
diff --git a/Userland/Libraries/LibC/wctype.cpp b/Userland/Libraries/LibC/wctype.cpp
@@ -24,6 +24,12 @@ enum {
  WCTYPE_XDIGIT,
 };
 
+enum {
+ WCTRANS_INVALID = 0,
+ WCTRANS_TOLOWER,
+ WCTRANS_TOUPPER,
+};
+
 extern "C" {
 
 int iswalnum(wint_t wc)
@@ -149,9 +155,14 @@ wint_t towctrans(wint_t, wctrans_t)
  TODO();
 }
 
-wctrans_t wctrans(const char*)
+wctrans_t wctrans(const char* charclass)
 {
- dbgln("FIXME: Implement wctrans()");
- TODO();
+ if (strcmp(charclass, "tolower") == 0)
+ return WCTRANS_TOLOWER;
+
+ if (strcmp(charclass, "toupper") == 0)
+ return WCTRANS_TOUPPER;
+
+ return WCTRANS_INVALID;
 }
 }